CN102654782B - Manufacturing method of computer shell - Google Patents

Manufacturing method of computer shell Download PDF

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Publication number
CN102654782B
CN102654782B CN201110051499.5A CN201110051499A CN102654782B CN 102654782 B CN102654782 B CN 102654782B CN 201110051499 A CN201110051499 A CN 201110051499A CN 102654782 B CN102654782 B CN 102654782B
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mentioned
making
computer casing
sealing
hole
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CN102654782A (en
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郭雪梅
林吉政
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Mitac Precision Technology Kunshan Ltd
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Mitac Precision Technology Kunshan Ltd
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Abstract

The invention provides a manufacturing method of a computer shell, comprising the following steps of: acquiring an aluminum alloy bright-surface sheet material; punching and molding; degreasing by an alkali agent; carrying out first anode oxidization treatment; dyeing; sealing a hole; coating a light-sensing solution; carrying out aeration treatment; developing; washing and drying; carrying out chemical etching; neutralizing; washing; carrying out second anode oxidization treatment; dyeing or developing a color; sealing a hole; and removing a solidified film layer after aeration to obtain a required product. The manufacturing method of the computer shell, disclosed by the invention, has highlight and colorful 3D (Three Dimensional) pattern effects, namely patterns are novel and various; the computer shell has a plurality of colors; the computer shell has new color and luster after being subject to special anode oxidized surface treatment; and the computer shell is durable.

Description

Computer casing method for making
[technical field]
The present invention relates to a kind of computer casing method for making, be specifically related to a kind of surface treatment method of aluminium alloy notebook computer casing part.
[background technology]
In current existing electronics 3C Product (computing machine, communication, consumer electronics product), especially the electronic product of some fashion, the appearance effect of all pursuing extremely, dazzling as mobile phone, digital camera, notebook computer, panel computer, digital plotter etc.These electronic products are normally adopted shell made of plastic, outward appearance plating one deck PVD film (vacuum splashing and plating) or employing IMD in-mold transfer printing processing procedure, make product there is the bright looking effect of metal-like, give people's visual impact, but the electronic product appearance member that this mode processes used after a period of time, outward appearance rete easily peels off, and loses metallic luster, and it is not exquisite and plain that outward appearance becomes.
Metal circle notebook computer manufacturer is through Aluminium Alloys in Common Use casting die product as notebook computer casing, but its color is single color and luster, and client is left with no alternative.
In view of this, be necessary to develop a kind of computer casing method for making in fact, this computer casing method for making makes aluminium alloy notebook computer casing part have Gao Guang, the broken colour and durable in use of metal.
[summary of the invention]
Therefore, the object of this invention is to provide a kind of computer casing method for making, this computer casing method for making makes aluminium alloy notebook computer casing part present high light and has 3D pattern effect concurrently, has broken colour and durable in use.
In order to achieve the above object, a kind of computer casing method for making of the present invention, it comprises the steps:
(1) get the bright panel material of aluminium alloy according to the design specification of product, by its impact briquetting;
(2) Al-alloy parts after moulding is carried out to ungrease treatment, put into oxidation trough energising and carry out anodized for the first time;
(3) Al-alloy parts after oxidation processes is put into dyeing liquor and dye, and by the Al-alloy parts sealing of hole after dyeing;
(4) be placed in exposure-processed under vacuum state, then development treatment by the Al-alloy parts painting photosensitive liquid after sealing of hole, and by the Al-alloy parts after painting photosensitive liquid;
(5) above-mentioned Al-alloy parts is carried out to chemical etching processing, after etching, carry out neutralisation treatment, and clean;
(6) above-mentioned Al-alloy parts is put into oxidation trough energising and carried out anodized for the second time;
(7) by workpiece dyeing or color development, then sealing of hole after oxidation processes for the second time;
(8) rete curing after exposure is removed, cleaning, drying, obtains required product.
Preferably, the degreasing agent adopting when degreasing in above-mentioned steps (2) be containing calcium carbonate and calcium phosphate alkaline defatting agent.
Preferably, the acid solution adopting when above-mentioned steps (2) and step (6) Anodic Oxidation is the mixed liquor of oxalic acid, sulfuric acid and formic acid, and concentration of oxalic acid is 1~3wt%, and sulfuric acid concentration is 160~220g/L, and formic acid concentration is 30~70g/L.
Preferably, when above-mentioned steps (2) and step (6) Anodic Oxidation, temperature is 20~21 DEG C, and voltage is 12~18V, and current density is 1.5~2.0A/dm 2, the reaction time is 30~60min.
Preferably, in above-mentioned steps (3), the time of dyeing is 2~15min.
Preferably, when the middle sealing of hole of above-mentioned steps (3), hole sealing agent is nickel acetate, and the concentration of this nickel acetate is 0.2~0.7wt%, and sealing of hole temperature is 80~90 DEG C, and the sealing of hole time is 10~20min.
Preferably, adopt spraying method coating in above-mentioned steps (4) when painting photosensitive liquid.
Preferably, when the middle chemical etching of above-mentioned steps (5), the etchant of employing is the mixed liquor of sodium nitrite and NaOH, and this mixed liquid concentration is 16~24wt%.
Preferably, when the middle chemical etching of above-mentioned steps (5), temperature is 20~90 DEG C, and the reaction time is 2~15min, and etch depth is 0.3~1.0mm.
Compared to prior art, a kind of computer casing method for making of the present invention, makes aluminium alloy notebook computer casing part present Gao Guang, the colorful 3D of having concurrently pattern effect, be that fancy novelty and fancy kind are many, there is broken colour, and through special anodized surface processing, color and luster is as newly, durable in use.
[embodiment]
Below in conjunction with embodiment, the invention will be further described.
In the present embodiment, computer casing method for making of the present invention, it comprises the steps:
Step 101: get the bright panel material of aluminium alloy, by its surface cleaning, then according to notebook computer casing impact briquetting, the computer casing after impact briquetting has concavo-convex embossing to produce;
Step 102: by stamping forming above-mentioned process Al-alloy parts with containing calcium carbonate and calcium phosphate alkaline defatting agent degreasing, to remove grease or the viscous mass of surface of the work, above-mentioned Al-alloy parts is put into oxidation trough energising and carry out anodized for the first time, be placed in oxalic acid by Al-alloy parts, in the mixed liquor of sulfuric acid and formic acid, carry out the anodized of 30~60min, concentration of oxalic acid is 1~3wt%, sulfuric acid concentration is 160~220g/L, formic acid concentration is 30~70g/L, when anodized, temperature is 20~21 DEG C, voltage is 12~18V, current density is 1.5~2.0A/dm 2,
Step 103: the first color as required, Al-alloy parts after oxidation processes is put into the dyeing liquor 2~15min that dyes, obtain the notebook computer casing of true qualities or single color, and the Al-alloy parts after dyeing is immersed to sealing of hole in hole sealing agent nickel acetate, the concentration of this nickel acetate is 0.2~0.7wt%, when sealing of hole, temperature is 80~90 DEG C, and the sealing of hole time is 10~20min;
Step 104: will adopt spraying method coating sclerosis sensitization liquid on the Al alloy parts after sealing of hole, this sclerosis sensitization liquid is T.R.R or K.R.R, coordinate with this Al-alloy parts with the mist woods of interior concavo-convex pattern again, under vacuum state, with hernia lamp or ultraviolet light exposure, because the effect of light, sensitization liquid molecule plays bridge formation polymerization, photographic department divides generation sclerosis diaphragm, then development treatment, adopt organic solvent kerosene to remove the ink layer of not sensitization, and cleaning, drying, desired pattern is showed in this Al-alloy parts surface;
Step 105: above-mentioned Al-alloy parts is carried out to chemical etching processing, be placed in by above-mentioned Al-alloy parts the mixed liquor that etchant is sodium nitrite and NaOH, the concentration of this mixed liquor is 16~24wt%, when etching, temperature is 20~90 DEG C, reaction time is 2~15min, and etch depth is 0.3~1.0mm, after etch processes, Al-alloy parts is put into neutralization chamber and is carried out neutralisation treatment, in and medicament be nitric acid, after neutralisation treatment, clean;
Step 106: carry out anodized for the second time by put into oxidation trough energising through the Al alloy parts of etch processes, be placed in oxalic acid by Al-alloy parts, in the mixed liquor of sulfuric acid and formic acid, carry out the anodized of 30~60min, while making to expose, sensitization and etched 0.3~1.0mm place do not generate oxide film, be convenient to painted or color development processing, wherein concentration of oxalic acid is 1~3wt%, sulfuric acid concentration is 160~220g/L, formic acid concentration is 30~70g/L, when anodized, temperature is 20~21 DEG C, voltage is 12~18V, current density is 1.5~2.0A/dm 2,
Step 107: by the Al-alloy parts dyeing sealing of hole processing after oxidation processes for the second time, carry out color development processing if do not dye, make workpiece there is photostability and permanance, color development is processed electrolytic solution used and is selected to have relation with expect color, if expect that color is bronze-colored, electrolytic solution adopts sulfate, as magnesium sulfate, nickelous sulfate, ammonium sulfate, and sealing of hole after color development;
Step 108: adopt suitable solution that rete curing after Al-alloy parts exposure is removed, cleaning, drying, obtains having the computer casing part product of colorful 3D effect pattern.
Computer casing method for making of the present invention, also can be applicable in all kinds of panel computers, digital plotter, casing of liquid crystal television set etc.This computer casing method for making makes aluminium alloy notebook computer casing part present Gao Guang, the colorful 3D of having concurrently pattern effect, and fancy novelty and fancy kind are many, have broken colour, and through special anodized surface processing, color and luster is as newly, durable in use.
Be pointed out that, the invention is not restricted to above-mentioned embodiment, any simple modification, equivalent variations and modification that any those skilled in the art do above-described embodiment based on technical solution of the present invention, all fall within the scope of protection of the present invention.

Claims (8)

1. a computer casing method for making, is characterized in that, this computer casing method for making comprises the steps:
(1) get the bright panel material of aluminium alloy according to the design specification of product, by its impact briquetting;
(2) Al-alloy parts after moulding is carried out to ungrease treatment, put into oxidation trough energising and carry out anodized for the first time;
(3) Al-alloy parts after oxidation processes is put into dyeing liquor and dye, and by the Al-alloy parts sealing of hole after dyeing;
(4) be placed in exposure-processed under vacuum state, then development treatment by the Al-alloy parts painting photosensitive liquid after sealing of hole, and by the Al-alloy parts after painting photosensitive liquid;
(5) above-mentioned Al-alloy parts is carried out to chemical etching processing, after etching, carry out neutralisation treatment, and clean;
(6) above-mentioned Al-alloy parts is put into oxidation trough energising and carried out anodized for the second time;
(7) by Al-alloy parts dyeing or color development, then sealing of hole after oxidation processes for the second time;
(8) rete curing after exposure is removed, cleaning, drying, obtains required product;
The acid solution adopting when above-mentioned steps (2) and step (6) Anodic Oxidation is the mixed liquor of oxalic acid, sulfuric acid and formic acid, and concentration of oxalic acid is 1~3wt%, and sulfuric acid concentration is 160~220g/L, and formic acid concentration is 30~70g/L; When above-mentioned steps (2) and step (6) Anodic Oxidation, temperature is 20~21 DEG C, and voltage is 12~18V, and current density is 1.5~2.0A/dm 2.
2. computer casing method for making according to claim 1, is characterized in that, the degreasing agent adopting when degreasing in above-mentioned steps (2) be containing calcium carbonate and calcium phosphate alkaline defatting agent.
3. computer casing method for making according to claim 1, is characterized in that, in above-mentioned steps (3), the time of dyeing is 2~15min.
4. computer casing method for making according to claim 1, is characterized in that, when the middle sealing of hole of above-mentioned steps (3), hole sealing agent is nickel acetate, and the concentration of this nickel acetate is 0.2~0.7wt%.
5. computer casing method for making according to claim 1, is characterized in that, when the middle sealing of hole of above-mentioned steps (3), temperature is 80~90 DEG C, and the sealing of hole time is 10~20min.
6. computer casing method for making according to claim 1, is characterized in that, adopts spraying method coating when the middle painting photosensitive liquid of above-mentioned steps (4).
7. computer casing method for making according to claim 1, is characterized in that, when the middle chemical etching of above-mentioned steps (5), the etchant of employing is the mixed liquor of sodium nitrite and NaOH, and this mixed liquid concentration is 16~24wt%.
8. computer casing method for making according to claim 1, is characterized in that, when the middle chemical etching of above-mentioned steps (5), temperature is 20~90 DEG C, and the reaction time is 2~15min, and etch depth is 0.3~1.0mm.
CN201110051499.5A 2011-03-04 2011-03-04 Manufacturing method of computer shell Active CN102654782B (en)

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CN103484916B (en) * 2013-09-29 2016-05-18 苏州利达铸造有限公司 The anodized technique of pack alloy for a kind of digital electronic goods
CN104708271A (en) * 2013-12-13 2015-06-17 汉达精密电子(昆山)有限公司 Manufacturing method of metal patter and product with metal pattern
CN103993317A (en) * 2014-06-04 2014-08-20 苏州胜利精密制造科技股份有限公司 Die-cast workpiece surface treatment process
CN104536553B (en) * 2015-01-06 2017-10-13 江西科技学院 A kind of preparation method of computer power adapter housing
US20160289858A1 (en) * 2015-04-03 2016-10-06 Apple Inc. Process to mitigate grain texture differential growth rates in mirror-finish anodized aluminum
CN105603485B (en) * 2015-08-27 2018-06-15 宇龙计算机通信科技(深圳)有限公司 Preparation method, mobile terminal case and the mobile terminal of alloy firm
US9970080B2 (en) 2015-09-24 2018-05-15 Apple Inc. Micro-alloying to mitigate the slight discoloration resulting from entrained metal in anodized aluminum surface finishes
CN106929897A (en) * 2015-12-30 2017-07-07 比亚迪股份有限公司 A kind of Al-alloy casing and preparation method thereof
CN106929851B (en) * 2015-12-30 2019-11-22 比亚迪股份有限公司 A kind of Al-alloy casing and preparation method thereof
CN105780082A (en) * 2016-03-25 2016-07-20 江苏富尔达机械有限公司 Multicolor oxidation technology for satin face of magnesium and silicon forging aluminum alloy base material
US10174436B2 (en) 2016-04-06 2019-01-08 Apple Inc. Process for enhanced corrosion protection of anodized aluminum
CN106400083B (en) * 2016-09-26 2018-09-04 兴科电子科技有限公司 A kind of surface treatment method of the high plain edge of aluminum alloy mobile phone shell
CN106947993A (en) * 2017-03-27 2017-07-14 东莞智富五金制品有限公司 A kind of noninductive light anodic process
CN109208055B (en) * 2017-06-30 2021-01-01 比亚迪股份有限公司 Aluminum alloy, preparation method thereof and mobile phone shell
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CN108312684A (en) * 2017-12-11 2018-07-24 姜文明 A kind of aluminium alloy and carbon-fiber-reinforced coloring process
CN108486628A (en) * 2018-03-22 2018-09-04 富士智能机电(珠海)有限公司 A kind of pre- sealing of hole secondary oxidation technique
CN108601254A (en) * 2018-04-24 2018-09-28 滁州瑞能电力科技有限公司 A kind of power equipment heat-dissipating casing and preparation method thereof
CN110552039A (en) * 2019-01-23 2019-12-10 深圳市鹏福创新五金有限公司 secondary oxidation sealing process
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